Serologic Evidence of West Nile Virus Infection in Horses, Coahuila State, Mexico

Abstract

Serum samples were obtained from 24 horses in the State of Coahuila, Mexico, in December 2002. Antibodies to West Nile virus were detected by epitope-blocking enzyme-linked immunosorbent assay and confirmed by plaque reduction neutralization test in 15 (62.5%) horses. We report the first West Nile virus activity in northern Mexico.

Keywords

• West Nile virus
• flavivirus
• Mexico
• horse
• surveillance
• dispatch